LOL! At least I'm not the worst at tactics trainer. I hate chess puzzles, because all I do is look at them and try to crash the highest value piece into the enemy king. These puzzle things only encourage me to play wrecklessly.

Actually, I can see one's rating being low, especially if one doesn't have a lot of tactics under one's belt. If you take your time and go past the time allotment, your rating ends up quite low. I know on my phone, I will pull up a tactic, get pulled away, get the tactic right but lose 15 points because I didn't do it in the time limit.